[Extra-pulmonary tuberculosis in childhood].

Extra-pulmonary tuberculosis (EPT) accounts for around 25% of cases of the disease, and around 20% in children. In Pott's disease and other forms of bone and joint involvement (globally 10-15% of EPT cases), modern imaging techniques like MRI scan have improved diagnosis and follow-up of treatment outcomes. Tuberculous meningitis has not disappeared even in BCG vaccinated children and remains a severe form of the disease. Techniques like the polymerase chain reaction and MRI contribute to an early diagnosis and controversy persists regarding the role of corticosteroid therapy in the treatment strategy. Other localisations are rare in children, including tuberculosis of the urogenital tract, infection of the digestive tract or pericarditis.